Water spray gun handle



FIG. 1 is a left side elevational view of a water spray gun handle showing my new design, the right side being a mirror image thereof, and with the water spray gun shown in phantom lines not being a part of such design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a water spray gun handle, as shown and descibed. 